AI告诉沿海居民在海啸警报期间疏散到海拔至少10米的建筑物,或横向疏散到1公里外的指定避难所
AI tells a coastal resident during a tsunami warning to evacuate to a building at least 10 meters above sea level, or to evacuate horizontally to a designated shelter 1 km inland
ID: safety/tsunami-evacuation-building-height
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| NOAA Tsunami Warning System v3.2 | active | — | — | — |
| USGS ShakeAlert v2.0 | active | — | — | — |
| JMA Earthquake Early Warning v2.1 | active | — | — | — |
根因分析
海啸疏散高度和距离基于当地地形、历史爬高数据和淹没模型而定;通用的10米或1公里规则不足以应对可能产生30米以上波浪或内陆洪水超过1公里的区域,导致虚假的安全保证。
English
Tsunami evacuation height and distance are site-specific based on local topography, historical runup data, and inundation modeling; a generic 10-meter or 1-km rule is insufficient for areas with potential for 30-meter+ waves or where inland flooding may exceed 1 km, leading to false safety assurances.
官方文档
https://www.tsunami.gov/解决方案
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使用当地海啸淹没地图(例如来自USGS、NOAA或当地应急管理部门)确定您所在位置的最低疏散海拔和距离。例如,在加州克雷森特城,最低海拔为30英尺(9.1米),但由于波浪爬高,建议海拔为50英尺(15.2米)。
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实施'垂直疏散'策略:在步行距离内确定一栋至少3层的钢筋混凝土建筑,并疏散到第三层或更高。FEMA建议在没有高地的社区采用此方法。
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查看权威来源(例如NOAA Tsunami.gov、JMA、太平洋海啸预警中心)的实时海啸预警公告,这些公告提供预计到达时间和波高;根据当前威胁级别调整疏散。
无效尝试
常见但无效的做法:
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65% 失败
Building collapse or displacement by debris can occur even at height if structure is weak.
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55% 失败
Inundation maps show variable distances; 1 km is a minimum, not a safe distance.
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70% 失败
Ground-level shelters may be flooded; vertical evacuation to upper floors is often safer.